Low Pressure Check Valves

BuTech ball check valves prevent reverse flow where leak-tight shutoff is not necessary. Standard materials of construction are 316 stainless steel with 17-4PH poppet for longer life, and 300 series stainless steel spring. BuTech offers both a Ball Check and Soft Seat check valve variation.

Note: For 316 stainless steel wetted parts, add -316WP to the catalog number.

Cracking pressure: 15 PSI (1 bar) approximate

Operating Temperature Range: 0 to 650 F (-18° to +343°C)

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BuTech o-ring check valves reliably prevent backflow where leak-tight shutoff for liquids or gases is required. Standard materials of construction are 316 stainless steel with Buna-N o-ring and 300 series stainless steel spring.

Cracking pressure: 15 PSI (1 bar) approximate.

Operating Temperature Ranges:

O-ring Material	Operating Temperature Range	Catalog Suffix
Buna-N	-65˚ to +250˚F (-54˚ to +121˚C)	----
Viton	-40˚ to +500˚F (-40˚ to +260˚C)	-VA
PTFE	-320˚ to +400˚F (-195˚ to +204˚C)	-TFE
Kalrez	-20˚ to +550˚F (-29˚ to +288˚C)	-HT

Catalog Number	Connection	MAWP	Cv	A	B	C	D
LPBC2	1/8" L/P Tube	15,000 PSI 1030 bar	0.15	2.38" (60.5)	1.88" (47.8)	0.50" (12.7)	0.62" (15.7)
LPBC4	1/4" SL/P Tube	11,500 PSI 790 bar	0.63	3.24" (82.3)	2.62" (66.5)	0.75" (19.1)	0.81" (20.6)
LPBC6	3/8" SL/P Tube	7,500 PSI 520 bar	1.70	4.44" (112.8)	3.50" (88.9)	1.38" (35.1)	1.38" (35.1)
LPBC8	1/2" L/P Tube	5,500 PSI 380 bar	3.40	4.67" (118.6)	3.50" (88.9)	1.38" (35.1)	1.38" (35.1)

To order a valve with a cracking pressure other than the standard 15 PSI, add the cracking pressure to the end of the catalog number. Example: A LPBC8 with 50 PSI cracking pressure would be ordered as LPBC8-50.

Cracking pressures available up to 100 PSI (7 bar).

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Catalog Number	Connection	MAWP	Cv	A	B	C	D
LPSC2	1/8" L/P Tube	15,000 PSI 1030 bar	0.15	2.38" (60.5)	1.88" (47.8)	0.50" (12.7)	0.62" (15.7)
LPSC4	1/4" SL/P Tube	11,500 PSI 790 bar	0.63	3.31" (84.1)	2.62" (66.5)	0.75" (19.1)	0.81" (20.6)
LPSC6	3/8" SL/P Tube	7,500 PSI 520 bar	1.70	4.44" (112.8)	3.50" (88.9)	1.38" (35.1)	1.38" (35.1)
LPSC8	1/2" L/P Tube	5,500 PSI 380 bar	3.40	4.67" (118.6)	3.50" (88.9)	1.38" (35.1)	1.38" (35.1)

Catalog Number

Connection

MAWP

LPSC2

1/8" L/P

Tube

15,000 PSI

1030 bar

0.15

2.38"

(60.5)

1.88"

(47.8)

0.50"

(12.7)

0.62"

(15.7)

LPSC4

1/4" SL/P

Tube

11,500 PSI

790 bar

0.63

3.31"

(84.1)

2.62"

(66.5)

0.75"

(19.1)

0.81"

(20.6)

LPSC6

3/8" SL/P

Tube

7,500 PSI

520 bar

1.70

4.44"

(112.8)

3.50"

(88.9)

1.38"

(35.1)

1.38"

(35.1)

LPSC8

1/2" L/P

Tube

5,500 PSI

380 bar

3.40

4.67"

(118.6)

3.50"

(88.9)

1.38"

(35.1)

1.38"

(35.1)

To order a valve with a cracking pressure other than the standard 15 PSI, add the cracking pressure to the end of the catalog number. Example: A LPSC4 with 40 PSI cracking pressure would be ordered as LPSC4-40.

Cracking pressures available up to 100 PSI (7 bar).

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Low Pressure Check Valves

Overview

Ball Check Valves

O-ring Check Valves

Downloads

BuTech - Low Pressure Valves, Fitting and Tubing

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High Pressure Check Valves

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